Version 3 is here! Arrma Big Rock V3 3S BLX Overview with Mods, Tips and Tricks!

[@MiltonAPrado]

Look in the front side facing the servo is a label there showing the cable + and - .

[@jeffreyyerdon6014]

Great information, got one on back order, keep the vids coming.

[@thedarkriver1]

I understand your reason for cutting out a small hole under the gear and it makes sense to SOME degree. I get that it enables loose debris to fall out. I understand makes sense. What i do not understand is after cutting out the hole the gear is totally exposed to sucking up the debris and grinding it while the RC is running through all sorts of terrain. What am I missing here? Thanks in advance?

[@larrys4227]

The hole simply doesn't allow debris to get in. Any that does gets pushed right back out. Without it, the buckets of sand and dirt that get in there just grinds the gears to death. Try it ... You can always fill it back in easily with some epoxy. But you won't ... You'll come back here and thank me for the best mod on the the 3s/4s line. 👍😎😁

[@wescat2]

10:55 Do you also seal under the spur gear with 3M or just the cutout?

[@larrys4227]

I've never used any kind of sealant or grease around the mount, or spur. Just the cutout. It really makes a big difference of getting sand and fine particles out of that area.

[@wescat2]

​@@larrys4227 Thanks. Have you had any issue anything getting up in the cutout by accident?

[@thatbig1]

I was thinking 2mm speaker foam gasket would do the job well to fit as a sealing ring around the bottom rolls of that are cheap

[@larrys4227]

A good question, that alot of people ask. I have NEVER had anything get caught through the cutout into the spur. RC race cars all have this slot and its to allow clearance and anything that gets thrown onto the chassis has a way of escaping without chewing up the spur. All of the Arrma 6S and bigger cars have it as well. I don't know why they don't do it with the 3S lineup. Your safe and no worries..

[@larrys4227]

I suppose you can do that. I like the slot. Once its cut, I never have to mess with that area again.

[@Adamhc75]

Hmm... I am definitely going to do the chassis mod underneath the power-pack on both my Big Rock V3 and Typhoon 3S V3 as after every run I am pulling the power-pack off just to clean underneath it and sometimes it can be a real bear to get it to slide out of the chassis because so much debris is underneath it..

[@PopExpo]

The relief cavity is crucial. I've chewed so many spur Gears cuz of debris

[@bradyknowzbest1149]

Polarity is marked on the side of the esc

[@mattpotts3959]

Is there anyway u can measure where the cut out is? I don't see how you can tell where to cut lol.

[@larrys4227]

You can measure from a spot on the motor module to find the rough distance. Then transpose that to the chassis. I always drill a single hole and remount the module. Looking through the hole you should be able to see were the spur gear is and if your off at all. It doesn't have to be perfect. Measure twice ... Drill once. 😉

[@rcuintheshed6981]

Thank you just bought one of these first rc in 20years you answered a lot of questions I was curious about thank you.

[@larrys4227]

Your going to love it. Arrma did a great job with V3 and all the upgrades. Great truck!

[@rcuintheshed6981]

@@larrys4227 so far I'm wrapped with it i actually bought two of them to get my son into the hobby aswell race each other etc exceeding expectations so far I'm having trouble with small pebbles and rocks getting stuck between that guard and red drive shaft guard you mention in the video and between uni joints and the wish bone arms even in the steering linkages was jammed by a small soft seed pod do you have any solutions to this

[@larrys4227]

@@rcuintheshed6981 .... The only time I had real problems with gravel getting inside the chassis was when running the Senton. The wheels are tucked under the body and they would throw all that stuff inside and cause problems. I made a cover out of window screen and velcro that cured 95% of the problem. You could do that too. I really haven't had trouble with that on the BR, Granite or Kraton, but I don't really run in gravel or rocky areas.

[@rcuintheshed6981]

@@larrys4227 I'll look into that I have some thin perspex around I thought of maybe a mesh screen unfortunately the property we run on is just that terrain we cleaned a track back to nice bare dirt best as we could but you just can't avoid them completely i wish i could

[@rcast3763]

Can you run this on a 3S Deans battery? Thanks

[@larrys4227]

I'm going to assume your talking about the connector. Deans connectors are rated for 2S max. They have a high resistance to letting the power flow and will get hot ... possibly melt or catch fire. Recommend upgrading to XT90, EC5/IC5. IC5 is what the truck comes with. Don't use an adapter.

[@rcast3763]

@@larrys4227 yes, i was referring to the connector. Currently, i have a 2S battery and using an adapter. Thanks for the advice, ill get an EC5/IC5 if im going to get a 3s. Cheers

[@Apasash]

Great unboxing, like it 👍

[@muzzy1346]

Did you ever have problem with the motor bearings?

[@larrys4227]

Not yet, but if I do ... A quick order from Jim's Bearings will take care of it

[@muzzy1346]

@@larrys4227 I’ve ran through bearings like crazy. Even ceramic bearings from Jim’s don’t last. Sucks though!

[@larrys4227]

Unless your trying to make a boat out of it, I would look elsewhere for the problem. Bent motor mount, mesh too tight. Did you slot the chassis? Harsh environment might do it too.

[@Overland_RC]

Great tips man! I actually killed a pinion from rocks getting stuck in the gears and denting my cheap aluminum gear up

[@larrys4227]

Thanks, man! I sent a sub your way ... :)

[@BOOSTEDLASER]

Assuming you drove it...like the new Granite or The new Big Rock better?

[@larrys4227]

The BR tires are garbage on the street, but I like it off-road. The Granite I can run anytime, anywhere with no changes.

[@thatbig1]

Larrys4227 try it with the granite wheels/tires on and let us know how it is, I’m thinking of ordering the big rock but contemplating getting a set of the v3 granite wheels

[@Aussieknuckleheads]

Isn't the cap pack on the positive lead?

[@larrys4227]

That very well may be true.... I've never noticed how the cap is wired.

[@KyleNorthmoreBMX]

If you cut a whole in the chassis to expose the gear, you're then constantly exposing it to the stuff you ring driving over? Aka dirt and mud and stuff how would that slot help? Lol

[@larrys4227]

No debris will get up inside through the whole. Look at all 1/8 scale nitro race cars ... Look at the Arrma 1/8 line ... They all have a slot. Try it .... you can always fill it later ... but you won't. You'll thank me ... 😁👍

[@davidhoward8461]

@@larrys4227 isn’t the reason 1/8 Nitro cars are slotted, is to facilitate engagement to a Starting box?

[@larrys4227]

@@davidhoward8461 ... Yes, but it's not the only reason. The electric race cars have the same slot. 👍

[@donuttime2507]

I got mine on order. Can't wait to see it in the flesh. I've heard at the big rock needs a little harder shock oil. Looks epic

[@marko123marki]

Great infos! Tnx 👍

[@BOOSTEDLASER]

So shakey ! Need a Gopro 8 or 9 or gimabal